Lemma 2.1 [1]}
Let \(F\) , \(G\)  be two non-constant meromorphic functions such that they share \((1,1)\)  and \(H\lnot \equiv 0.\)  Then
\(N(r,1;F\mid =1)=N(r,1;G\mid =1)\le N(r,H)+S(r,F)+S(r,G).\) 

